diff options
Diffstat (limited to 'drivers/media/radio/si4713-i2c.c')
| -rw-r--r-- | drivers/media/radio/si4713-i2c.c | 74 |
1 files changed, 63 insertions, 11 deletions
diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c index a6e6f19..0fab6f8 100644 --- a/drivers/media/radio/si4713-i2c.c +++ b/drivers/media/radio/si4713-i2c.c @@ -27,6 +27,8 @@ #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/regulator/consumer.h> #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-common.h> @@ -43,6 +45,11 @@ MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>"); MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter"); MODULE_VERSION("0.0.1"); +static const char *si4713_supply_names[SI4713_NUM_SUPPLIES] = { + "vio", + "vdd", +}; + #define DEFAULT_RDS_PI 0x00 #define DEFAULT_RDS_PTY 0x00 #define DEFAULT_RDS_PS_NAME "" @@ -369,7 +376,17 @@ static int si4713_powerup(struct si4713_device *sdev) if (sdev->power_state) return 0; - sdev->platform_data->set_power(1); + err = regulator_bulk_enable(ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (err) { + v4l2_err(&sdev->sd, "Failed to enable supplies: %d\n", err); + return err; + } + if (gpio_is_valid(sdev->gpio_reset)) { + udelay(50); + gpio_set_value(sdev->gpio_reset, 1); + } + err = si4713_send_command(sdev, SI4713_CMD_POWER_UP, args, ARRAY_SIZE(args), resp, ARRAY_SIZE(resp), @@ -384,7 +401,13 @@ static int si4713_powerup(struct si4713_device *sdev) err = si4713_write_property(sdev, SI4713_GPO_IEN, SI4713_STC_INT | SI4713_CTS); } else { - sdev->platform_data->set_power(0); + if (gpio_is_valid(sdev->gpio_reset)) + gpio_set_value(sdev->gpio_reset, 0); + err = regulator_bulk_disable(ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (err) + v4l2_err(&sdev->sd, + "Failed to disable supplies: %d\n", err); } return err; @@ -411,7 +434,13 @@ static int si4713_powerdown(struct si4713_device *sdev) v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n", resp[0]); v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n"); - sdev->platform_data->set_power(0); + if (gpio_is_valid(sdev->gpio_reset)) + gpio_set_value(sdev->gpio_reset, 0); + err = regulator_bulk_disable(ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (err) + v4l2_err(&sdev->sd, + "Failed to disable supplies: %d\n", err); sdev->power_state = POWER_OFF; } @@ -1967,7 +1996,8 @@ static int si4713_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct si4713_device *sdev; - int rval; + struct si4713_platform_data *pdata = client->dev.platform_data; + int rval, i; sdev = kzalloc(sizeof *sdev, GFP_KERNEL); if (!sdev) { @@ -1976,11 +2006,26 @@ static int si4713_probe(struct i2c_client *client, goto exit; } - sdev->platform_data = client->dev.platform_data; - if (!sdev->platform_data) { - v4l2_err(&sdev->sd, "No platform data registered.\n"); - rval = -ENODEV; - goto free_sdev; + sdev->gpio_reset = -1; + if (pdata && gpio_is_valid(pdata->gpio_reset)) { + rval = gpio_request(pdata->gpio_reset, "si4713 reset"); + if (rval) { + dev_err(&client->dev, + "Failed to request gpio: %d\n", rval); + goto free_sdev; + } + sdev->gpio_reset = pdata->gpio_reset; + gpio_direction_output(sdev->gpio_reset, 0); + } + + for (i = 0; i < ARRAY_SIZE(sdev->supplies); i++) + sdev->supplies[i].supply = si4713_supply_names[i]; + + rval = regulator_bulk_get(&client->dev, ARRAY_SIZE(sdev->supplies), + sdev->supplies); + if (rval) { + dev_err(&client->dev, "Cannot get regulators: %d\n", rval); + goto free_gpio; } v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops); @@ -1994,7 +2039,7 @@ static int si4713_probe(struct i2c_client *client, client->name, sdev); if (rval < 0) { v4l2_err(&sdev->sd, "Could not request IRQ\n"); - goto free_sdev; + goto put_reg; } v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n"); } else { @@ -2012,6 +2057,11 @@ static int si4713_probe(struct i2c_client *client, free_irq: if (client->irq) free_irq(client->irq, sdev); +put_reg: + regulator_bulk_free(ARRAY_SIZE(sdev->supplies), sdev->supplies); +free_gpio: + if (gpio_is_valid(sdev->gpio_reset)) + gpio_free(sdev->gpio_reset); free_sdev: kfree(sdev); exit: @@ -2031,7 +2081,9 @@ static int si4713_remove(struct i2c_client *client) free_irq(client->irq, sdev); v4l2_device_unregister_subdev(sd); - + regulator_bulk_free(ARRAY_SIZE(sdev->supplies), sdev->supplies); + if (gpio_is_valid(sdev->gpio_reset)) + gpio_free(sdev->gpio_reset); kfree(sdev); return 0; |